I am not able to connect to the host. Sunstone GUI shows "It appears 
there was a server exception and check the server's log". There are 
errors when i create and try to add a host. It is not clear from the 
opennebula guide(pdf) the steps to add a host. Is there a way to find this error and correct it?<br>
The contents of sunstone.error file.<br><br>SocketError - getaddrinfo: Name or service not known:<br> /usr/lib/ruby/1.8/net/http.<div id=":10f">rb:560:in `initialize'<br> /usr/lib/ruby/1.8/net/http.rb:560:in `open'<br>
 /usr/lib/ruby/1.8/net/http.rb:560:in `connect'<br>
 /usr/lib/ruby/1.8/timeout.rb:53:in `timeout'<br> /usr/lib/ruby/1.8/timeout.rb:101:in `timeout'<br> /usr/lib/ruby/1.8/net/http.rb:560:in `connect'<br> /usr/lib/ruby/1.8/net/http.rb:553:in `do_start'<br> /usr/lib/ruby/1.8/net/http.rb:542:in `start'<br>

 /usr/lib/one/ruby/cloud/CloudClient.rb:98:in `http_start'<br> /usr/lib/one/ruby/cloud/marketplace/marketplace_client.rb:54:in `do_request'<br> /usr/lib/one/ruby/cloud/marketplace/marketplace_client.rb:35:in `get'<br>

 /usr/lib/one/ruby/cloud/marketplace/marketplace_client.rb:69:in `list'<br> /usr/lib/one/sunstone/models/SunstoneMarketplace.rb:29:in `get_appliance_pool'<br> /usr/lib/one/sunstone/sunstone-server.rb:312:in `GET /marketplace'<br>

 /usr/lib/ruby/vendor_ruby/sinatra/base.rb:1151:in `call'<br> /usr/lib/ruby/vendor_ruby/sinatra/base.rb:1151:in `compile!'<br> /usr/lib/ruby/vendor_ruby/sinatra/base.rb:724:in `instance_eval'<br> /usr/lib/ruby/vendor_ruby/sinatra/base.rb:724:in `route_eval'<br>

 /usr/lib/ruby/vendor_ruby/sinatra/base.rb:708:in `route!'<br> /usr/lib/ruby/vendor_ruby/sinatra/base.rb:758:in `process_route'<br> /usr/lib/ruby/vendor_ruby/sinatra/base.rb:755:in `catch'<br> /usr/lib/ruby/vendor_ruby/sinatra/base.rb:755:in `process_route'<br>

 /usr/lib/ruby/vendor_ruby/sinatra/base.rb:707:in `route!'<br> /usr/lib/ruby/vendor_ruby/sinatra/base.rb:706:in `each'<br> /usr/lib/ruby/vendor_ruby/sinatra/base.rb:706:in `route!'<br> /usr/lib/ruby/vendor_ruby/sinatra/base.rb:843:in `dispatch!'<br>

 /usr/lib/ruby/vendor_ruby/sinatra/base.rb:644:in `call!'<br> /usr/lib/ruby/vendor_ruby/sinatra/base.rb:808:in `instance_eval'<br> /usr/lib/ruby/vendor_ruby/sinatra/base.rb:808:in `invoke'<br> /usr/lib/ruby/vendor_ruby/sinatra/base.rb:808:in `catch'<br>

 /usr/lib/ruby/vendor_ruby/sinatra/base.rb:808:in `invoke'<br> /usr/lib/ruby/vendor_ruby/sinatra/base.rb:644:in `call!'<br> /usr/lib/ruby/vendor_ruby/sinatra/base.rb:629:in `call'<br> /usr/lib/ruby/vendor_ruby/rack/commonlogger.rb:20:in `call'<br>

 /usr/lib/ruby/vendor_ruby/rack/session/abstract/id.rb:195:in `context'<br> /usr/lib/ruby/vendor_ruby/rack/session/abstract/id.rb:190:in `call'<br> /usr/lib/ruby/vendor_ruby/rack/head.rb:9:in `call'<br> /usr/lib/ruby/vendor_ruby/sinatra/showexceptions.rb:21:in `call'<br>

 /usr/lib/ruby/vendor_ruby/rack/methodoverride.rb:24:in `call'<br> /usr/lib/ruby/vendor_ruby/sinatra/base.rb:1272:in `call'<br> /usr/lib/ruby/vendor_ruby/sinatra/base.rb:1303:in `synchronize'<br> /usr/lib/ruby/vendor_ruby/sinatra/base.rb:1272:in `call'<br>

 /usr/lib/ruby/vendor_ruby/thin/connection.rb:80:in `pre_process'<br> /usr/lib/ruby/vendor_ruby/thin/connection.rb:78:in `catch'<br> /usr/lib/ruby/vendor_ruby/thin/connection.rb:78:in `pre_process'<br> /usr/lib/ruby/vendor_ruby/thin/connection.rb:53:in `process'<br>

 /usr/lib/ruby/vendor_ruby/thin/connection.rb:38:in `receive_data'<br> /usr/lib/ruby/vendor_ruby/eventmachine.rb:257:in `run_machine'<br> /usr/lib/ruby/vendor_ruby/eventmachine.rb:257:in `run'<br> /usr/lib/ruby/vendor_ruby/thin/backends/base.rb:61:in `start'<br>

 /usr/lib/ruby/vendor_ruby/thin/server.rb:159:in `start'<br> /usr/lib/ruby/vendor_ruby/rack/handler/thin.rb:13:in `run'<br> /usr/lib/ruby/vendor_ruby/sinatra/base.rb:1234:in `run!'<br> /usr/lib/ruby/vendor_ruby/sinatra/main.rb:25<br>

 /usr/lib/one/sunstone/sunstone-server.rb:414</div>